Up to 310 extra heavy trucks a day rumbling from quarries in Horokiwi and Ngauranga, down State Highway 1, through the Terrace Tunnel, past the Basin Reserve, through the Mt Victoria Tunnel, and on through residential streets to Wellington Airport, day and night, for up to 3 years – and then rumbling back.

That’s what Wellington International Airport Ltd wants to inflict on Wellington’s residents and ratepayers. They are seeking $90 million from Wellington City Council, and more again from other Wellington-region councils and central government, to extend Wellington Airport runway 363 metres into Lyall Bay. And their resource consent application makes it clear the scale of the disruption their plans will entail.

There are many arguments against this plan – and you will find a lot of them on the Guardians of the Bays website. But even people who may not be opposed to a runway extension per se need to pay attention to the construction traffic implications, because they are serious both for road users and for those living near the planned route who value their lifestyle – and their sleep.

If you like a long read, Technical Report 9 is the core of the matter. This shows that the airport company wants to run up to 30 trucks an hour – that’s up to one truck every two minutes – through their central Wellington route during these times:

9:30am to 2:30pm weekdays; and

10:00pm to 6:00am weekdays.

So, in trying to avoid peak-hour and school pickup traffic, the airport company has opted for truck movements throughout the night instead. And it’s not just on State Highway 1 – the current plan envisages those trucks rumbling down suburban streets in Kilbirnie and Rongotai as well: day after day, night after night.

Right now, Wellington City Council, Greater Wellington and the airport company are batting the resource consent application back and forth. The Councils have expressed serious concern about the airport company’s construction traffic plans, and there may yet be changes before the resource consent application is publicly notified.

But unless the airport company’s plans change radically, you might want to ask yourself: does the Wellington transport system really need another 310 heavy trucks going back and forth a day? And do I want those trucks rumbling through my suburb? And if your answer is “no”, then you might want to make a submission about that when you get the chance in a few weeks’ time.

Submissions on Wellington City Council’s Low Carbon Capital Plan close on Friday – and now there’s a helpful submission guide you can use, prepared by Wellington climate action group Keep a Cool World.

Why should you submit? Because Wellington City Council has learned how to talk a good game on climate change, while continuing to make decisions that result in increased greenhouse gas emissions that make climate change worse – like supporting further road-building that will lead to increased emissions from induced traffic, or backing an airport runway extension that, if it goes ahead, is projected to lead to a major increase in both truck movements through the central city, and aviation emissions.

Wellington City Council claims to be a leader on climate change action, but for that claim to be credible, its actions have to match its words.